Panel upgrades are having a moment — EV chargers, heat pumps, induction ranges, and 30-amp-at-a-time home electrification keep pushing 100A services past their limit. Which means more homeowners than ever are collecting three quotes for a job they don’t understand. The estimate that explains the job wins it.
Start with the load calc — before you commit to a number
The first question isn’t “what does a 200A panel cost” — it’s “does this house actually need 200A, and will it pass inspection at 200A once the EV charger lands?” A quick NEC 220.82-style calculation answers it: square footage, fixed appliances, HVAC, and the planned additions. Two minutes of arithmetic protects you from quoting a service that fails at rough-in — and telling a homeowner “I ran your load calculation, here’s the math” instantly separates you from the guy who eyeballed it. (A calculator built for this lives in Toolbelt’s electrical kit.)
The scope most quotes leave out
A service upgrade is never just the panel. The complete estimate covers:
- The panel itself — 200A, 40-space; name the brand and model.
- New service entrance where required: mast, weatherhead, SE cable, meter base (often utility-spec’d).
- Utility coordination — the disconnect/reconnect appointment; who schedules it and the realistic wait.
- Grounding brought to current code: ground rods, bonding of water and gas lines, GEC sizing.
- Code-required breakers: AFCI/GFCI requirements can add real cost on a reconnect — line-item them so the number doesn’t look padded.
- Permit and inspection, named and included.
- Circuit relabeling — twenty minutes that homeowners rave about.
Explain the day itself
The homeowner’s hidden worry is “how long is my power off?” Answer it in the estimate: “Power is disconnected by the utility in the morning; expect 4–8 hours without service; we coordinate same-day reconnection and inspection where the jurisdiction allows.” One honest sentence buys more trust than any adjective.
Structure the price as options
| Option | Scope |
|---|---|
| Good | 200A panel swap, grounding to code, permit & inspection |
| Better | Everything above + whole-home surge protection |
| Best | Everything above + EV-ready 50A circuit to the garage |
The “best” tier does quiet work for you: it plants the idea that this upgrade is the gateway to the EV charger — and makes you the obvious electrician to install it.
Put the assumptions in writing
Service upgrades have discovery risk: corroded SE cable, unpermitted subpanels, aluminum branch circuits. Handle it the same way roofers handle rotten decking — a written allowance: “Price assumes serviceable existing SE conductors; replacement, if required at disconnect, quoted separately before proceeding.” You’re not hedging; you’re documenting. Inspectors respect it and so do customers.
An estimate with the load calc referenced, the utility dance explained, grounding and AFCI/GFCI itemized, and the permit included doesn’t read like a price — it reads like the plan of the person who’s clearly done this two hundred times. That’s what the signature is really for.